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TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download

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PAR 227, STEPS 39-42 ASSEMBLY CHAP 5, SEC XXXIII Figure 278 (Step 39) Using a micrometer depth gage (A), measure the distance from the reverse-range support housing (B) surface to the transmission hous- ing (C) split-line surface. Record this dimen- sion. Figure 279 (Step 40) Measure the depth of the counterbore in the transmission rear housing (A). Record this dimension. Figure 280 (Step 41) Using a micrometer, measure the thickness of the transmission housing-to-rear housing gasket (A). Record this dimension. Install gasket (A) on housing (B). Install spacer (C) on hub of reverse-range carrier assembly (D). Figure 281 (Step 42) To obtain shim pack (A) thickness, add the dimensions obtained above in Steps 40 and 41. Add an additional 0.012-inch. From the re- sulting figure, subtract the dimension obtained in Step 39. This difference is the thickness of the shim pack required. Three shim thick- nesses are available (0.008, 0.010, 0.012 approx.) Install the number of shims (A) re- quired. Using sling (B), install rear housing assembly (C) onto transmission main housing assembly (D). 173